/*
 * Copyright 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.supernote.data

import android.content.Context
import com.example.supernote.data.database.FileEntityDatabase
import com.example.supernote.data.manager.ManagerRepository
import com.example.supernote.data.manager.impl.FakeManagerRepository
import com.example.supernote.data.repository.FileEntityRepository
import com.example.supernote.data.repository.OfflineFileEntityRepository
import com.example.supernote.data.trash.TrashRepository
import com.example.supernote.data.trash.impl.FakeTrashRepository

/**
 * Dependency Injection container at the application level.
 */
interface AppContainer {
    val managerRepository: ManagerRepository
    val trashRepository: TrashRepository
    val fileEntityRepository: FileEntityRepository
}

/**
 * Implementation for the Dependency Injection container at the application level.
 *
 * Variables are initialized lazily and the same instance is shared across the whole app.
 */
class AppContainerImpl(private val applicationContext: Context) : AppContainer {

    override val managerRepository: ManagerRepository by lazy {
        FakeManagerRepository()
    }

    override val trashRepository: TrashRepository by lazy {
        FakeTrashRepository()
    }

    override val fileEntityRepository: FileEntityRepository by lazy {
        OfflineFileEntityRepository(
            FileEntityDatabase.getDatabase(applicationContext).fileEntityDao(),
            FileEntityDatabase.getDatabase(applicationContext).trashEntityDao()
        )
    }

}
